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manamesasher

  • 3 years ago

For the following system, use the second equation to make a substitution for y in the first equation. 3x + y = 2 y + 4 = 3x

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  1. manamesasher
    • 3 years ago
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    3x+ 3 - 4x= 2?

  2. RyanL.
    • 3 years ago
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    solve for y on the second equation

  3. manamesasher
    • 3 years ago
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    -1?

  4. RyanL.
    • 3 years ago
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    y + 4 = 3x y + 4-4 = 3x-4 y = 3x-4 Plug that into 3x + y = 2 What do you get then?

  5. manamesasher
    • 3 years ago
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    3x+ 3x- 4 = 2?

  6. RyanL.
    • 3 years ago
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    Yes you are correct. Then solve for x

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